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Finding the Fourth Proportional to 71,726.07, 98,981.72 and 39,894.98

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Solution

The fourth proportional to 71,726.07, 98,981.72 and 39,894.98 is: 55,054.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,726.07 : 98,981.72 = 39,894.98 : x
  2. Step 2: Convert to fraction form
    71,726.07/98,981.72 = 39,894.98/x
  3. Step 3: Cross multiply
    71,726.07x = 98,981.72 × 39,894.98
  4. Step 4: Simplify right side
    71,726.07x = 3,948,873,194.99
  5. Step 5: Solve for x
    x = 3,948,873,194.99/71,726.07
  6. Step 6: Final answer
    x = 55,054.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.